Improvement in adjustable bolsters for bedsteads



JACOBHOF MANN. .Improvement in Adjustable Boi'ste rs for Bedsteads. N0.

Patented May16,1877.

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(landfill Y $21125 JACOB HOFMANN, 0}!" CHICAGO, ILLINOIS.-

Letters Patent No. 114,819, than May 16, 1871.

IMPROVEMENT IN ADJUSTABLE BOLSTERS FOR BEDSTEADS.

The Schedule referred to in than Letters Patent and making part of thesame.

To whom it may concern.-

Be it known that I, J AOOB HOFMANN, of Chicago, in the county of Cookand State of Illinois, have in vented a new and useful Improvement inAdjustable Bolsters for Bedsteads; and I do declare that the followingis a true and accurate description thereof, reference being had to theaccompanying drawing and to the letters of reference marked thereon, andbeing a part of this specification, in which Figure 1 is a perspectiveview of my bolster with the bolster-frame elevated.

'Fignre 2,a detached view of the lock-bars, partially insection.

Figure 3 is a detached view, showing joint of foldingbars.

Like letters refer to like parts in each figure.

The nature of this invention relates tothe construction of an adjustablebolster for bedsteads, and is more particularly designed for the use ofinvalids, whereby they can be bolstered in any desired position from alying to a sitting posture.-

The invention consists of certain frames, hinged together at one side,and in adjustable folding bars, whereby the height of the bolster isregulated, and in the peculiar manner in which the device is secured tothe desired position, as is more fully'hereinafter set forth.

In the drawing- A represents the lower frame of my bolster, and isprovided with the studs B B.

G is the upper or bolster-frame, which may" be upholstered, and ishinged to the frame A at c,

Dare adjustable folding bars secured at one end to the bolsterframe atd. These bars are made in sections, so that they can be folded together,and when so folded they are held in place by the elasps 71.

The bars, when extended, are secured in that position by the bolts 12passing through the eyes 0'.

In the bars are the holes f, to receive the ends of lock-bolts E.

These bolts pass through the studs B and are pro? vided with the collarsg.

, Between them, encircling the bolts, is a coil-spring,

The inner end-of one of the bolts E is smaller than that of the other,which'is bored out to receive it; or.

the hrge one may be a pipe, so that whenthcy are drawn from theirengagement with the bars D their set forth. 2. The construction andarrangement of the frames A and O, studs B, adjustable folding bars D,and rods E and spring 1*, substantially as herein described.

JACOB HOFMANN- Witnesses:

JAMES HALL, LOUIS KEITH.

